package org.shoukaiseki.supersaiyan.common.utils;

import org.apache.commons.lang3.StringUtils;
import org.shoukaiseki.supersaiyan.common.constant.HttpStatus;
import org.shoukaiseki.supersaiyan.common.exception.ServiceException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.shoukaiseki.supersaiyan.common.core.domain.model.LoginUser;

import java.util.Set;

/**
 * 安全服务工具类
 *
 * @author ruoyi
 */
public class SecurityUtils
{
    /**
     * 用户ID
     **/
    public static Long getUserId()
    {
        try
        {
            return getLoginUser().getUserId();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户ID异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取部门ID
     **/
    public static Long getDeptId()
    {
        try
        {
            return getLoginUser().getDeptId();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取部门ID异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户账户
     **/
    public static String getUsername()
    {
        try
        {
            return getLoginUser().getUsername();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户账户异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取用户
     **/
    public static LoginUser getLoginUser()
    {
        try
        {
            return (LoginUser) getAuthentication().getPrincipal();
        }
        catch (Exception e)
        {
            throw new ServiceException("获取用户信息异常", HttpStatus.UNAUTHORIZED);
        }
    }

    /**
     * 获取Authentication
     */
    public static Authentication getAuthentication()
    {
        return SecurityContextHolder.getContext().getAuthentication();
    }

    /**
     * 生成BCryptPasswordEncoder密码
     *
     * @param password 密码
     * @return 加密字符串
     */
    public static String encryptPassword(String password)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.encode(password);
    }

    /**
     * 判断密码是否相同
     *
     * @param rawPassword 真实密码
     * @param encodedPassword 加密后字符
     * @return 结果
     */
    public static boolean matchesPassword(String rawPassword, String encodedPassword)
    {
        BCryptPasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
        return passwordEncoder.matches(rawPassword, encodedPassword);
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isAdmin(Long userId)
    {
        return userId != null && 1L == userId;
    }

    /**
     * 是否为管理员
     *
     * @param userId 用户ID
     * @return 结果
     */
    public static boolean isSystem(Long userId)
    {
        return userId != null && (2L == userId||1L == userId);
    }

    /**
     * 判断是否拥有某项权限
     * @param permission            需要判断的权限
     * @return
     */
    public static boolean hasPermission(String permission){
        LoginUser loginUser = getLoginUser();
        return hasPermission(loginUser,permission);
    }

    /**
     * 判断是否拥有某项权限
     * @param loginUser             登录的用户
     * @param permission            需要判断的权限
     * @return
     */
    public static boolean hasPermission(LoginUser loginUser,String permission){
        Set<String> permissions = loginUser.getPermissions();
        for (String s : permissions) {
            if (StringUtils.equals(s,permission)) {
                return true;
            }
        }
        return false;
    }

    public static void main(String args[]){
        String pwd = SecurityUtils.encryptPassword("123456");
        System.out.println(pwd);

        boolean bool = SecurityUtils.matchesPassword("123456",pwd);
        System.out.println(bool);
    }

}
